Injecting headers into Silverlight without WCF

Ive been trying to figure this one out for a while. I need to be able to inject a username and password into a soap message header, without the use of WCF. I'm hoping there is a method that doesn't require me to either rewrite the service reference or开发者_Go百科 have to write my own custom requests.

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http://geekswithblogs.net/SunnyCoder/archive/2009/03/15/username-password-amp-ws-security-with-silverlight.aspx

This blog gave me the information on how to inject a header without WCF.